Appendix C. Effects of
neighbor control (C), seeding method (S), and mulch (M) on the total cover of
nonnative species, the total cover of native species, and species richness in
three seeding years. All measurements were made in August of the year after
seeding.

Nonnative cover

Native cover

Species richness

df

SS

F

P

SS

F

P

SS

F

P

Plots seeded in 1994

Control

1

6.950

58.76

0.000

0.211

1.83

0.182

11.350

94.93

0.000

Seed

2

0.177

0.75

0.479

0.973

4.22

0.020

2.690

11.24

0.000

Mulch

1

0.403

3.41

0.071

0.037

0.32

0.573

0.092

0.77

0.384

C × S

2

0.342

1.45

0.246

1.210

5.27

0.009

0.369

1.54

0.225

C × M

1

0.140

1.18

0.283

0.005

0.04

0.841

0.031

0.26

0.611

S × M

2

0.030

0.13

0.880

0.310

1.35

0.270

0.602

2.52

0.091

C × S × M

2

0.083

0.35

0.706

0.170

0.74

0.483

0.011

0.04

0.957

Error

48

5.680

5.530

5.740

Total

59

13.800

8.450

20.880

Plots seeded in 1995

Control

1

1.550

19.19

0.000

0.173

1.47

0.230

0.523

7.36

0.008

Seed

2

0.399

2.47

0.094

1.340

5.69

0.006

2.630

18.50

0.000

C × S

2

0.482

2.98

0.059

0.297

1.26

0.292

0.006

0.05

0.956

Error

54

4.360

6.350

3.840

Total

59

6.790

8.160

7.000

Plots seeded in 1996

Mulch

1

0.348

3.02

0.099

0.155

2.44

0.136

0.187

1.46

0.243

Error

18

2.070

1.150

2.310

Total

19

2.420

1.300

2.500

Control

1

0.204

2.58

0.114

0.272

3.10

0.084

0.582

6.31

0.015

Seed

2

0.156

0.99

0.379

0.218

1.24

0.297

1.300

7.05

0.002

C × S

2

0.420

2.66

0.079

0.042

0.24

0.787

0.110

0.60

0.555

Error

54

4.270

4.740

4.980

Total

59

5.050

5.270

6.980

Notes:
All statistics are from ANOVAs within each seeding year. Significant F
values are in bold. Neighbor control (applied or not) and seeding method (unseeded,
broadcast, drilled) were main factors in all sites and years. Mulch (applied
or not) was a main factor in the 1994 seeding year. In the 1996 seeding year,
mulch effects in plots that received neighbor control and broadcast seeding
were examined with one-way ANOVA. The native hay seeding method was omitted
from the analyses. Cover data were arc-sin square root transformed and species
richness data were log-transformed prior to analysis. All SS
have been multiplied by 10 for presentation.